To begin, place the glutinous rice flour in a pan. Add the potato starch, sugar, and a pinch of salt.
Next, add the milk and heat over low heat, stirring continuously until everything is well combined. Keep stirring until the mixture becomes thick and sticky.
Then, pour the mixture onto a plate and shape it while still warm, forming an even square or rectangle.
Finally, refrigerate for about 30 minutes. After that, cut it into small pieces and, if desired, dust some of them with cocoa powder.
